Caption: Close up of the eyes of a mantis shrimp (Odontodactylus scyllarus). Mantis shrimps are thought to have the most complex eyes in the animal kingdom. It is neither a mantis nor a shrimp, but a stomatopod crustacean. This one is a smasher , so named for its club-like appendages, used to crack the shells of prey species. Filmed in the Lembeh Strait, Sulawesi, Indonesia.